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SCORPION-xisa [38]
3 years ago
12

Three resistors of 3.3 kΩ, 4.7 kΩ and 3.9 kΩ are connected in series across a

Physics
1 answer:
natima [27]3 years ago
6 0

Explanation:

A.) equivalent resistance

Equivalent resistance ( Rt ) in a series connection is sum of all resistance.

Rt = 3300 + 4700 + 3900

= 11900 ohms

= 11.9 k ohm

B.) current is constant across the whole circuit if it is in series .

current = potential difference ÷ total resistance

current = 12 / 11900 = 0.00100 Amphere

= 0.1 mA

C. potential difference ( v ) across the circuit =

current( i ) × resistance ( Rt )

=》v = 0.1 × 0.001 × 11900 = 12 volts

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the force will decrease to 3/4 of its original value.

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